Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2018   06:23:52   (  -0.01, -75.16) (  -0.06, -75.05)   13.41                80
 12/19/2018   18:29:43   (  -0.01, -75.18) (  -0.15, -75.81)   72.50                80
 12/20/2018   18:08:18   (  -0.01, -75.19) (   0.88, -71.29)  444.97                80
 12/22/2018   06:32:45   (   0.01, -75.20) (   0.31, -76.55)  153.93                80
 12/23/2018   06:11:21   (   0.01, -75.21) (  -0.72, -72.03)  363.37                80
 12/24/2018   18:35:57   (  -0.01, -75.23) (  -0.45, -77.34)  239.57                80
 12/25/2018   18:14:32   (  -0.00, -75.24) (   0.53, -72.80)  278.04                80
 12/27/2018   06:39:00   (  -0.00, -75.26) (   0.61, -78.08)  320.12                80
 12/28/2018   06:17:35   (  -0.01, -75.28) (  -0.37, -73.54)  197.90                80
 12/29/2018   18:42:11   (   0.00, -75.31) (  -0.80, -78.85)  403.56                80